House extensions in Lancaster

Lancaster received 431 householder applications in the last 12 months - about 8 a week. Rear extensions and dormers are the most common. Of the 340 decided so far, 298 were approved. If you're planning your own, the applications below show what people nearby applied for and how the council decided.

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Showing 50 of 108 applications
22 Oct 2026 Awaiting decision 26/01036/FUL

Ryelands Mini Market 147 Ryelands Road Lancaster Lancashire LA1 2RA

Formation of new shop entrance, installation of roller shutter to the front elevation and alterations to external elevations

Full Application Lancaster
22 Oct 2026 Awaiting decision 26/01048/FUL

29 Combermere Road Heysham Morecambe Lancashire LA3 2ST

Erection of a single storey side extension

Full Application Lancaster
22 Oct 2026 Awaiting decision 26/01032/PLDC

7 Fairhope Avenue Morecambe Lancashire LA4 6LB

Proposed lawful development certificate for the construction of a dormer extension to the rear elevation and construction of a hip to gable extension

Proposed Lawful Development Certificate Lancaster
22 Oct 2026 Awaiting decision 26/01031/PLDC

25 Endsleigh Grove Lancaster Lancashire LA1 2TX

Proposed lawful development certificate for the erection of a single storey front extension and construction of a dormer extension to the rear elevati...

Proposed Lawful Development Certificate Lancaster
22 Oct 2026 Awaiting decision 26/01030/FUL

1 Haylot Square Lancaster Lancashire LA1 3QH

Retrospective application for installation of render to front/side/rear elevations

Full Application Lancaster
21 Oct 2026 Awaiting decision 26/01055/FUL

Flats 1-4 Wesley House 9 - 11 Friar Street Lancaster Lancashire

Installation of replacement windows and external doors to the rear elevation

Full Application Lancaster
21 Oct 2026 Awaiting decision 26/01058/FUL

5 St Johns Grove Heysham Morecambe Lancashire LA3 1ET

Erection of a carport to the front of existing garage

Full Application Lancaster
19 Oct 2026 Awaiting decision 26/00977/FUL

Leckfields Barn Low House Lane Cowan Bridge Lancashire

Change of use of barn into dwelling, erection of a single storey side extension, installation of windows and doors, erection of a boundary wall and as...

Full Application Lancaster
19 Oct 2026 Awaiting decision 26/01043/FUL

14 Coolidge Avenue Lancaster Lancashire LA1 5ER

Installation of a replacement fence and removal of leylandii hedge

Full Application Lancaster
19 Oct 2026 Awaiting decision 26/01035/FUL

310 Heysham Road Heysham Morecambe Lancashire LA3 2AZ

Erection of a two storey side and rear extension

Full Application Lancaster
19 Oct 2026 Awaiting decision 26/01015/FUL

2 Chapel View Overton Morecambe Lancashire LA3 3EP

Demolition of existing conservatory, erection of a single storey rear extension and construction of front porch

Full Application Lancaster
16 Oct 2026 Awaiting decision 26/01027/PLDC

Appletree Farm Quernmore Brow Quernmore Lancaster Lancashire LA2 0QP

Proposed lawful development certificate for change of fenestration

Proposed Lawful Development Certificate Lancaster
16 Oct 2026 Awaiting decision 26/01026/PLDC

2 Coolidge Avenue Lancaster Lancashire LA1 5EH

Proposed lawful development certificate for the erection of a single storey rear extension

Proposed Lawful Development Certificate Lancaster
15 Oct 2026 Awaiting decision 26/00910/FUL

102 Broadway Morecambe Lancashire LA4 5XY

Erection of single storey side extension and conversion of garage

Full Application Lancaster
14 Oct 2026 Awaiting decision 26/01019/FUL

2 Station Buildings Warton Road Carnforth Lancashire LA5 9BS

Change of use of retail unit and maisonette to 4 self contained flats, installation of replacement windows and doors, construction of roof terrace and...

Full Application Lancaster
14 Oct 2026 Awaiting decision 26/01017/FUL

185 Bare Lane Morecambe Lancashire LA4 6RR

Demolition of existing rear conservatory, erection of single storey rear extension including roof terrace with balustrade, construction of rear roof d...

Full Application Lancaster
13 Oct 2026 Awaiting decision 26/01016/PLDC

Brows Farm Glasson Dock Road Glasson Dock Lancaster Lancashire LA2 0BP

Proposed lawful development certificate for the erection of an outbuilding for ancillary use to the main dwelling

Proposed Lawful Development Certificate Lancaster
12 Oct 2026 Awaiting decision 26/01009/PLDC

96 Albert Road Morecambe Lancashire LA4 4QT

Proposed lawful development certificate for the erection of a single storey infill extension

Proposed Lawful Development Certificate Lancaster
12 Oct 2026 Awaiting decision 26/00847/FUL

The Croft 2 Kiln Lane Wray Lancaster Lancashire LA2 8QW

Change of use of agricultural land to domestic curtilage in association with The Croft 2 Kiln Lane, erection of a single storey wrap around extension,...

Full Application Lancaster
9 Oct 2026 Awaiting decision 26/01002/PLDC

18 Betony Morecambe Lancashire LA4 6JD

Proposed lawful development certificate for the erection of a single storey rear extension and installation of solar panels to the rear roof elevation

Proposed Lawful Development Certificate Lancaster
8 Oct 2026 Awaiting decision 26/00961/FUL

30 Colchester Avenue Lancaster Lancashire LA1 4AX

Demolition of existing conservatory, erection of a single storey rear extension, erection of first floor extension over existing dining/utility/garage...

Full Application Lancaster
8 Oct 2026 Awaiting decision 26/00880/PLDC

5 Hanging Green Lane Hest Bank Lancaster Lancashire LA2 6JB

Proposed lawful development certificate for the erection of a rear/side single storey extension

Proposed Lawful Development Certificate Lancaster
7 Oct 2026 Awaiting decision 26/00988/FUL

8 Sulyard Street Lancaster Lancashire LA1 1PX

Installation of roof light to the rear elevation

Full Application Lancaster
7 Oct 2026 Awaiting decision 26/00995/FUL

10 The Nook Bolton Le Sands Carnforth Lancashire LA5 8DR

Erection of a single storey side extension, erection of replacement garage, construction of a dormer extension to the rear elevation, installation of ...

Full Application Lancaster
6 Oct 2026 Awaiting decision 26/00992/FUL

Ship Inn 23 Lancaster Road Caton Lancaster Lancashire LA2 9QJ

Change of use from a public house into a convenience store, demolition of existing extension and erection of single storey side and rear extensions

Full Application Lancaster
5 Oct 2026 Awaiting decision 26/00984/FUL

17 Bay Horse Drive Lancaster Lancashire LA1 4LA

Erection of a two storey front hip to gable extension, single storey side/rear extension, front porch and creation of new access

Full Application Lancaster
2 Oct 2026 Awaiting decision 26/00964/FUL

15 Broadway Morecambe Lancashire LA4 5BQ

Erection of side and rear extensions and construction of a side pitched-roof dormer extension

Full Application Lancaster
2 Oct 2026 Awaiting decision 26/00939/FUL

231 - 233 Marine Road Central Morecambe Lancashire LA4 4BQ

Installation of replacement windows and roofs to bay window and shop frontage fascia

Full Application Lancaster
1 Oct 2026 Awaiting decision 26/00951/FUL

Brow Top Basin Quernmore Brow Quernmore Lancashire

Conversion of former water treatment building into a holiday let, creation of vehicular access, associated parking, conversion of existing outbuilding...

Full Application Lancaster
1 Oct 2026 Awaiting decision 26/00612/FUL

14 Orchard Avenue Bolton Le Sands Carnforth Lancashire LA5 8HP

Demolition of detached garage and erection of single storey side extension and attached garage

Full Application Lancaster
29 Sept 2026 Awaiting decision 26/00969/FUL

North End Barn Holme Lane Brookhouse Lancaster Lancashire LA2 9JT

Erection of a front porch

Full Application Lancaster
29 Sept 2026 Awaiting decision 26/00931/FUL

Wenning Cottage Wennington Road Wennington Lancaster Lancashire LA2 8NN

Erection of a pergola

Full Application Lancaster
29 Sept 2026 Awaiting decision 26/00932/FUL

Church Of Ascension And Church Hall Michaelson Avenue Lancaster Road Morecambe Lancashire

Erection of an extension on the front (south) elevation to provide a new entrance area and covered porch

Full Application Lancaster
28 Sept 2026 Awaiting decision 26/00965/FUL

19 Hodder Place Lancaster Lancashire LA1 4HR

Demolition of existing rear conservatory and erection of a single storey rear extension with roof lantern

Full Application Lancaster
28 Sept 2026 Awaiting decision 26/00897/PLDC

3 Grange Street Morecambe Lancashire LA4 6BW

Proposed lawful development certificate for the erection of a rear single storey extension

Proposed Lawful Development Certificate Lancaster
25 Sept 2026 Awaiting decision 26/00963/FUL

Primrose Bank Kirkby Lonsdale Road Arkholme Carnforth Lancashire LA6 1BA

Erection of a single storey rear extension,construction of a pitched roof extension to the front elevation, conversion of garage into living space, in...

Full Application Lancaster
25 Sept 2026 Awaiting decision 26/00842/FUL

Docker Cottage Keerside Arkholme Carnforth Lancashire LA6 1AP

Demolition of single storey lean-to extension and erection of a single storey side extension

Full Application Lancaster
23 Sept 2026 Awaiting decision 26/00945/FUL

North Lodge Manor House Road Farleton Lancaster Lancashire LA2 9LG

Erection of a single storey extension to the side elevation, hip to gable and first floor loft extension, installation of external wall cladding, erec...

Full Application Lancaster
23 Sept 2026 Awaiting decision 26/00941/FUL

The Old Vicarage Burrow Road Tunstall Carnforth Lancashire LA6 2QN

Erection of a residential annex in association with The Old Vicarage, demolition of part of store room extension and removal of tennis court

Full Application Lancaster
22 Sept 2026 Refused 16 Oct 26/00948/PAH

10 Rydal Road Lancaster Lancashire LA1 3HA

Erection of a 4.05 metre deep, single storey rear extension with a maximum roof height of 3.10 metres and a maximum eaves height of 3.00 metres

Prior Approval - Householder rear ext Lancaster
21 Sept 2026 Awaiting decision 26/00947/FUL

The Retreat Wyresdale Road Lancaster Lancashire LA1 3JJ

Erection of a single storey porch to the west elevation

Full Application Lancaster
18 Sept 2026 Awaiting decision 26/00896/FUL

14 The Green Bolton Le Sands Carnforth Lancashire LA5 8FD

Erection of a single storey rear extension

Full Application Lancaster
18 Sept 2026 Awaiting decision 26/00940/FUL

Cowdber Farm Woodman Lane Cowan Bridge Carnforth Lancashire LA6 2JT

Erection of a two-storey side extension, single storey rear outrigger and demolition of existing rear outbuilding

Full Application Lancaster
17 Sept 2026 Awaiting decision 26/00924/PLDC

Fair View 76 Slyne Road Morecambe Lancashire LA4 6PD

Proposed lawful development certificate for erection of a detached outbuilding comprising of garage and home office

Proposed Lawful Development Certificate Lancaster
16 Sept 2026 Approved 14 Oct 26/00912/PAH

1 Westfield Grove Morecambe Lancashire LA4 4LQ

Erection of a 3.4 metre deep, single storey rear extension with a maximum roof height of 3.8 metres and a maximum eaves height of 2.7 metres

Prior Approval - Householder rear ext Lancaster
16 Sept 2026 Awaiting decision 26/00911/FUL

3 Clevelands Avenue Silverdale Carnforth Lancashire LA5 0RP

Construction of raised decking to the rear

Full Application Lancaster
16 Sept 2026 Approved 28 Sep 26/00909/PLDC

11 Kevin Grove Overton Morecambe Lancashire LA3 3HA

Proposed lawful development certificate for construction of a rear dormer extension

Proposed Lawful Development Certificate Lancaster
16 Sept 2026 Awaiting decision 26/00890/FUL

50 Oak Avenue Morecambe Lancashire LA4 6HS

Erection of a single storey rear and side extension

Full Application Lancaster
16 Sept 2026 Decided 23 Sep 26/00937/EIR

Greenlot Farm Postern Gate Road Quernmore Lancaster Lancashire LA2 9EL

Screening request for the erection of extension to existing building and enlargement of existing underground slurry tank

EIA Screening Opinion Lancaster
15 Sept 2026 Awaiting decision 26/00930/FUL

28 Cotton Square Lancaster Lancashire LA1 5US

Erection of a single storey side/rear extension and construction of a dormer extension to the rear elevation

Full Application Lancaster
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Frequently asked questions

When do you need planning permission for a house extension?
Single-storey rear extensions up to 4m (detached) or 3m (semi-detached / terraced) are usually permitted development. Two-storey extensions, anything in a conservation area, or larger projects almost always need a planning application.
What's the difference between planning permission and permitted development?
Permitted development rights let you build certain things without applying for planning permission, subject to specified limits. Anything outside those limits, whether taller, larger or in a protected area, needs full planning permission.
How long does a householder application take?
The statutory target is 8 weeks from validation. Most simple householder extensions are decided within that window; complex or contested cases, especially those drawing a lot of comments, can take longer.
Can I get email alerts for new extensions applications in Lancaster?
Yes. Click "Set up alerts" on this page and you'll get a daily or weekly email listing every new extensions application published by Lancaster. You can also narrow the alert to a postcode, street, or drawn area.

We check Lancaster's planning portal daily. New extensions applications appear here within a day of being published.